Colocado por: SkinkxWeber.tec 915 ou Sika Igolastic... o Atlas também tem produto similar, mas não sei a referência.
Colocado por: davidloivosBoa noite.
Obrigado pela sua excelente partilha.
Novidades?
Colocado por: JoelM
Até onde li (posso estar enganado), não vi em nenhuma parte destes textos referência aos autores do estudo /artigo original.
Colocado por: JoelM
Na página onde está o texto, não vi nenhuma referência ao artigo (mais uma vez, pode ter.me escapado essa referência).
Colocado por: ****Andamos todos enganados com BPV de certeza....
Is DuPont™ Tyvek® a vapor barrier?
No, DuPont™ Tyvek® is not a vapor barrier. It is made with unique material science to keep air and bulk water out while allowing moisture vapor inside walls to escape.
Can I use a Tyvek® weather barrier in combination with a vapor barrier?
Using a Tyvek® weather barrier in combination with a vapor barrier depends on how the rest of the wall system is constructed, and the climate the building is in. If the majority of the year is spent heating the home, where the inside temperature is greater than the outside, it is generally good to use a vapor retarder behind the interior drywall. In hot, humid climates, vapor barriers should not be used.
Colocado por: ****<
eu nao disse nada, para começar
Colocado por: ****e que as madeiras usadas têm 0 cov’s ......
Colocado por: ****
claro que sim ....alias esta a ser um grande porblema nas casas de madeira e lsf...
Colocado por: ****Eu queria era ver no vosso site um certificado que diz que os perfis são desmagnetizados
Colocado por: ****
nao existe uma obra em lsf o wood frame que nao tenho BPV interior, atà a maconaria leva nas renovacoes .
Colocado por: ****
esta brincar so pode ?
Colocado por: Anonimo06082021
e a entidades independentes do sistema?
Colocado por: Anonimo06082021
o homem de ferro deve saber-lhe responder,pois projectam e usam muito OSB.
OSB and plywood paneis sold in Europe for construction uses must meet the specific product standard for the panel type (such as EN 300 for OSB and EN 636 for plywood) and the general panel standard EN 13966 used for construction applications throughout the European Union. The European standard for formaldehyde emissions is EN 717-1, which uses a one cubic meter chamber to measure emission leveis. U.S. and,; Canadian structural plywood (PS 1, PS 2, CSA 0121 or CSA 0151) and OSB (PS 2 or CSA 0325) easily meet the 0.124 mg/m3 limit of the E1 class, the most stringent formaldehyde class based on EN 717-1. In summary, when tested to International formaldehyde emission limits, North American engineered wood have consistently met the most stringent emission regulations.
The highest standards in the world for formaldehyde emissions are CARB (California Air Resources Board), US HUD, JAS (Japanese Agricultural Standards) and OSB exported to Europe must meet European standards. In each case OSB produced to PS2 standard is exempt from those regulations. Why? Because testing done at world renowned testing labs show that formaldehyde emissions from OSB are negligible or non-existent.
Another health concern is the potential for offgassing of chemicals used in manufacturing. OSB and exterior plywood both contain a formaldehyde-based, waterproof resin called phenol-formaldehyde (PF). Compared to the widely used urea-formaldehyde (UF) resin, PF resins emit relatively low levels of formaldehyde. UF resins, which are found in composite materials used in cabinets, shelving, paneling and other products, are more toxic and outgas significantly more formaldehyde than PF-based glues.
Colocado por: Anonimo06082021em vez de fugirmos ás maquinetas é ao contrario,cada vez são mais.